Crawlspace door fan



FIG. 1 is a front right isometric view of a crawlspace door fan showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an enlarged right side view thereof;

FIG. 6 is an enlarged left side view thereof; and,

FIG. 7 is a back view. 

The ornamental design for a crawlspace door fan, as shown. 